Improvement in fanning-mills



ttriirt %tair5 LEWIS M. CROSBY, or ASHTABULA, ch10.

Letters Patent No. 114,416, dated May 2, 1871.

IMPROVEMENT IN FANNI'NG-MILLSP The Schedule referred to in those LettersPatent and making part of the same.

To all whom it may concern:

Be it known that l, LEWIS M. CROSBY, of Ashtabula, in the countyofAshtabula and State of Ohio, have invented a certain new and improvedFanning- Mill; and. I do hereby declare that the following is a full,clear, and complete description of the same, reference being bad to theaccompanying drawing making part of this specification, in which- Figurel is a side elevation of the machine.

Figure 2'is a plan view.

Figure 3 is a front view.

Like letters of reference refer to like parts in the several views.

The nature of this invention relates to that part of a fanning-milltermed the shoe, consisting of the several sieves and grain-boards, andthe object of the same is to so hang said shoe that it should have adirect horizontal vibratory motion instead of aswinging motion like thatof the ordinary machine, the front end of the shoe being supported atthe sides by links instead of being suspended from the top of themachine in the ordinary way.

It also relates to the construction of the fan, whereby an increase ofwind is obtained for separating the chafi', &c., from the grain, all ofwhich is constructed and arranged in the following manner, viz;:

In the drawing, fig. 1-

A represents the body of the mill, which is or may be of the ordinaryshape;

B is the hopper;

' G, the shoe;

D, the fan;

E, the gearing; and

F,the crank whereby said shoe and fan are operated.

The shoe referred to is constructed in ,the'usual manner, but is hung inthe month of the body by means of the links G, fig. 3, one on each sideof the shoe.

Said links consist of a hook, one limb of which is attached to the sideof the shoe by means of staples a, fig. 1, fixed in the shoe, and inwhich the hook is loosely held.

The opposite end of the link, which is also a hook, is inserted in aneye made in the end of one of the arms of the bell-crank H, as shown infig. 2.

To the opposite side of the shoe a link is attached in the same way,whereas the outer end of the link is hooked into an arm, .I, fig. 2,pivoted to the side of the body of the mill, as shown.

It will be obvious that by this means the shoe is supported on each sideby the links G, which, in turn, are supported by the arm I andbell-crank H, and by which bell-crank the shoeis vibrated, the samebeing actuated by the gearing and crank E F, connected thereto by therod J.

In this way of supporting the shoe the space above the shoe isunobstructed by hangers hence the escape of the dust, straws, 860., fromthe shoe will be unimpeded, and the grain more thoroughly cleaned thanin the ordinary mill, wherein the shoe is suspended by hangers dependingfrom the front beam or roof of the mouth, against which the straws andother refuse matter lodge or are blown and fall back. Also, bysupporting the shoe in my 'way a direct horizontal reciprocating motionis obtained to it, which will keep the foul stud and grain more upon themiddle of the sieves than it can. be in the ordinary mill, where theshoe is given an oscillating motion in consequence of its beingsuspended by the hangers.

' In my mill the fan is constructed with six wings.

The inner corner J of each web K is cut ofi, as indicated by the dottedlines a, fig. 2, thereby giving more breadth to the central part of theweb than to the ends, so that, on blowing, more wind will be blown uponthe middle of the sieves, where the largest amount of grain, 850., isreceived, than at the sides.

By this shape of the web and the increased number of them a strongerblast is produced from an-equal number of revolutions of the fan, andthe grain more thoroughly cleaned than when the fan is made in theordinary way; but I do not claim such construction as new.

0' laim.

What I do claim as my invention, and desire to secure by Letters Patent,is

The shoe 0, supported in the frame of .the mill by means of thehook-links G, when connected thereto and to the bell-crank H and arm I,substantially in the manner as described, and for the purpose set forth.

LEWIS M. CROSBY. Witnesses:

W. H. Bonnmen, J. H. BURRIDGE.

